Towel bar



FIG. 1 is a perspective view of my new design for a towel bar;

FIG. 2 is a right side end view of the towel bar of FIG. 1, the left side being the same as the right side;

FIG. 3 is a top view of the towel bar;

FIG. 4 is a front view of the towel bar;

FIG. 5 is a bottom view of the towel bar; and,

FIG. 6 is a rear view of the towel bar. 

The ornamental design for towel bar, as shown and described. 